Sifter.



S. M. GREEN.

SIFTER.

APPLICATION FILED MAY 26. 1914.

1,14,09. Iiatented Aug. 10, 1915.

2 SHEETS-SHEET l.

Jun/enrol 'S'M-areen/ S. M. GREEN.

SIFTER.

APPLICATION FILED MAYZG- $914.

LMQQOQ. Patented Aug. 10, 1915.

2 SHEETSSHEET 2.

SHIRLEY M. GREEN, OF WACO, TEXAS.

SIFTER.

Specification of Letters Patent.

Application filed May 26, 1914. Serial No. 841,049.

To all whom. it may concern Be it known that I, SmnLnY MARIE GREEN, a citizen of the United States, residing at \Vaco, in the county of McLennan and State of Texas, have invented certain new and useful Improvements in Sifters, of which the following is a specification.

My invention relates to improvements in sitters of the household character which are employed for sifting flour and the like, and has for its primary object to provide a sifter which is equipped with a double sieve and agitator that may be operated simultaneously through the medium of one handle thus providing a thorough sifting action in an extremely expeditious manner.

An object of importance is to provide a detachable sieve to be connected to the main sieve and body of the sifter and is secured in a novel manner to one of the agitator shafts and may be readily detached to be cleaned.

An object of importance is to provide a device of the character described that is simple as to construction, durable and efiicient in operation and inexpensive to manufacture.

The above and additional objects are ac complished by such means as are illustrated in the accompanying drawings, described in the following specification and then more particularly pointed out as claimed.

lVith reference to the drawings, wherein I have illustrated the preferred embodiment of my invention as it is reduced to practice, and throughout the several views of which similar reference numerals designate corresponding parts, Figure 1 is a side elevation of my improved sifter, Fig. '2 is a horizontal sectional view taken on the plane of line 2-2 of Fig. 1, Fig. 3 is a vertical sectional view taken on the plane of line 3-3 of Fig. 1, and Fig. 4 is a detail front perspective View, showing the manner of connecting the detachable sieve with the main sifterbody.

Referring to the drawings by characters of reference, the numeral 1 designates a cylindrical body portion of the sitter which is beveled at its upper end, as at 2, to act as a scoop and provided with a suitable handle 3 on one side thereof. This cylindrical body 1 is formed of suitable sheet metal and has mounted therein adjacent to the upper part thereof, a semi-spherical sieve. 4 formed of some suitable foraminous material.

Mounted transversely of the cylindrical body 1 is a horizontal and rotatable shaft 5 provided at one end with a11- integral crank arm 6. An agitator comprising a number of semi-circular bars or plates 7 is rigidlv secured to the shaft 5. The agitator is dc slgned to cooperate with the sieve 4 in the usual manner, so that a sifting action is thoroughly provided. Mounted adjacent the extreme lower portion of the body 1, is a horizontal shaft 8 similar in every detail to the one 5 and provided at one end with a handle crank arm 9. An agitator, desig nated by the numeral 10, is secured to the shaft 8. The shaft 8 extends beyond the body 1 a slight distance, for a purpose to be later more fully described.

A cylindrical extension body 11 is arranged to be detachably secured to the lower portion of the main body 1 and has mounted therein a sieve 12 similar in-construc-- tion to the one 4. The agitator 10 is arranged to cooperate with the sieve 12 in the same manner as does the one comprising the bars 7 with the sieve 4.

As a means for substantially connecting the extension body 11, I provide on opposite sides of the upper edge of extension body, L-shaped slots 13 which have their vertical portions open at the upper edge of the extension body 11. The pro ecting portions 11 and 15 of the shaft 8 are designed to be positioned within the horizontal portions of the L-shaped slots 13. To 'attach the extension body 11, it is only necessary to position the projecting portions 11 and 15 within the vertical portions of the slots 13 until the extension portions register with the horizontal portions of the slots, at which time a twist may be given the extension body to bring the portions 1 1. and 15 to the horizontal portions of the slots 13. In this manner it will be readily seen that the extension body may be easily and detachably secured to the main body 1. The extension body 11 is of greater diameter than the main body 1 so that the lower end of the main body is received within the upper end of the extension body.

As a means for simultaneously rotating the agitators, I provide an operating bar 16 Patented Aug. 10, 1915 that is pivotally connected at the ends of The agitator 10 for the lower screen strikes and agitates the material as it falls from said upper screen and then acts to force said material through the lower screen. In arranging this agitator, as described, a thorough and effective sifting action is provided.

Referring to the foregoing description and accompanying drawings, it will be readily seen that I have provided a duplex sifter by means of which an expeditious and thorough sifting action is provided and removal of the attachable body easily facilitated to permit cleaning of the sieves and corresponding arts.

In practice, have found that the form of my invention, illustrated in the drawings and referred to in the above description,-

as the preferred embodiment, is the most eflicient and practical; yet realizing that'the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the fact that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of my invention, as

set forth.

What is claimed is 1. A sifter comprising a cylindrical body, an upper screen disposed transversely in said body, an agitator mounted above the upper screen to force material therethrough, a lower screen in said body and a movable agitator mounted to operate in said body between said upper screen and said lower screen, and adapted during its movement first to strike and agitate the material as it falls from said upper screen and then to force said material through said lower screen.

2. A sifter comprising'a cylindrical body,

an upper screen disposed transversely in said body, an agitator mounted above the upper screen to forcematerial therethrough, a lower screen in said body and a rotary agitator mounted to operate in said body between said upper screen and said lower screen, and adapted during its rotary movement first to strike and agitate the material as it falls from said upper screen and then to force said material through said lower screen.

. 3. A sifter comprising a cylindrical body, an upper screen disposed transversely in said body, an agitator mounted above the upper screen to force material therethrough, a lower screen in said body, and a movable agitator mounted to operate in said body between said upper screen and said lower screen and adapted during its movement first to strike and agitate the material as it falls from said upper screen and then to force said material throughsaid lower screen and common means for operating both of said agitators.

4. A sifter comprising a cylindrical body, an upper screen disposed transversely in said body, an agitator mounted above the upper screen to force material therethrough, a lower screen in said body, a rotatable agitator mounted to operate in said body between said upper screen and said lower screen and adapted during its rotary movement first to strike and agitate the material as it falls from said upper screen, then to force said material through said lower screen and common means for simultaneously operating both of said agitators.

In testimony whereof I aflix my signature in presence of two witnesses.

SHIRLEY M. GREEN.

Witnesses:

C. HERBERT GREEN, PEARL 'HUDDLESTON. 

